#include<stdio.h>
int main()
{
    int a;
    printf("please enter the year");
    scanf("%d",&a);
    if(a%4==0)
    {
        if(a%100!=0)
        printf("%dis leap year", a);
        else
        printf("%dis not leap year", a);
    }
    else
    printf("%dis not leap year", a);
return 0;
}